Apparatus for treating sheets



Aug. 24, 1926. 1,597,268

" E. DIESCHER APPARATUS FOR TREATING SHEETS V Filed July 2, 1923 4 Sheets-Sheet 1 Aug. 24, 1926.

S. E. DIESCHER APPARATUS FOR TREATING SHEETS 4 Filed July 2, -1 923 4 Sheets-Sheet 2 Aug. 24,1926.

1,597,268 s. E. DIESCHER APPARATUS FOR TREATING SHEETS I Filed Ju ly 2. 192a 4 Sheeis-Sheet s T I FIE-7.4-

FllS.5

//V VENTOR I QMMSLL M I Patented Aug. 24, 1926.

UNITED STATES 1,597,268 PATENT oF-FIcE.

SAMUEL E. .DIESCHER; FITTSBUBGH, II?E'NNSYLVANIA -ASSIGNOR- T0 s. 'DIESCHER 86 SONS, A GOPARTLN'ERSHIP CONSISTING OF SAMUEL E. DIESCHER AND AUGUST P. DIESCHER, 0 F PITTSBURGH, PENNSYLVANIA.

APPARATUS FOR TREATING SHEETS;

Application filed il'u ly' 2,

perature is such that there is a tendency for the plates to stick andif the requ red tem-' perature isexceeded, the tendency for plates to stick together isincreased in proportion.

The prevailing method employed for separating stickers consists in hammering the top sheet of the pile, as it comes out of the annealing pot which is done by hand with a sledge. In such hammering, the central portion of the top of the pack is first 0p-' erated on and then portions around the center, each circular series of blows belng more distant from the center than the preceding series. As will be readily understood by those skilled in the art, each impact of the hammer will cause a flow of the metal in practically all directions from the point of impact and the flow will be greatest in the sheet struck by the hammer and decreasing inwardly of the pile. By reason of this difference in flow adjacent sheets will move relativeone to the other, rupturing the bond between the sheets. \Vhile this methods is effective to'rupt-ure the bond betweenfsheets,

it involves heavylabor and considerable time i as a dozen or more blows are required in most cases. And further, as the metal will pact and as the hammer is raised after each blow, it follows that flow from each blow will extend into portions which have already been treated. After the hammering, such a pack of sheets as may have been loosened. are removed from the pile for separation by hand. i

The invention describedhereinhas for its object the provision of means for subjecting the pile of sheets to the impacts necessary for effecting suflicient flow ofmetal t'o rupture the bonds between sheets, the blows being imparted over substantially the entire area of the top ofthepile at oneoperation, the initial blow being delivered approxi 1923. Serial No. 648,168.

'inat 'ely the center of the top of the pile and the other blows in sequence at suitable distance from the point of initial impact. It is a further object of the invention to controlthe direction of the effect produced by the blows subsequent to the. initialblow.

The invention is hereinafter more fully described and claimed. a

In the accompanymg drawing forming a part of this specification, Fig. 1 is a plan view offa, hammer mechanism embodying the mprovement claimed herein; Fig. 2 is a VlGW. showing a portion of the carrying frame and showing the hammer portion of the mechanism in section; Fig. 3 is av sectional elevation of the hammer head; Fig. 4 is a sectional view on the plane indicated by the line IVIV, Fig. 2; Fig.5 is a sectional view on the plane. indicated by the line V V, Fig. 3 looking up; Figs. .6 and 7 are vieWs similar to Figs. 3 and 4 illu trating a modification ofthe constructionof the hammer head.

The hammering mechanism and the means for operating the same are arranged within aframe 7 preferably supported by a truck so that the hammer mechanism may be moved fromplace tojplace. By reference .to Figs. 1 and 4 it will beseen that one end of a frame 7extends beyond itssupport, and to the projecting portions of the frame are secured guide members 17 for the harm mer head, as hereinafter described; These guides should be spaced ddistance apart approximately equal to one of the horizontal dimensions of the pileso that said guide will pass along opposite sides of a pile when the l frame is shifted, thereby ensuring the verflow in all directions'from the point of 1m j tical alinement of the hammer head with the pile to be operated on. i

cylindrical reduced portions 22 and 23 which when the parts of the head are assembled, extendthrough openlngs in the heads of the of the bars .0.

shell 18. It will be observed that the cylindrical portions 23 of the bars a at the center of the shell are longer, measured from the shoulders than the corresponding parts of the bars 6 surrounding the bars a, and that the cylindrical parts 23 of the bars 0, outside of the bars 7), are shorter than the parts 23 of the bars 6. It follows from such construction that when the head is dropped, the bars a will hit the pile of sheets in advance of the bars Z) and the latter in advance In order that the downward movement of the shell and consequently the bars may not be checked by the bars a when their movement is arrested by contact with the pile of sheets, the necks 22 at the upper ends of the bars vary in length proportional to the distance of the respective bars from the cent-er line of the head. As the shell enclosing the percussing barsis of considerable weight, a sudden stoppage of its downward movement would produce a severe ar or shock, and to avoid such jar, springs 24 are placed on the necks 22, the shoulders 'g on which the lower ends of the springs bear be ing so located on the several bars and the T springs made of such lengths that the upper head of the shell will bear simultaneously on all the springs. I v

'In lieu of the construction of hammer head having one or more central percussion bars and one or more annular series of bars ployed.

' bar [Z and one or more annular bars 6 and 7.

In order to connect the hammer bars to the shell for effecting the upward movement of the bars,.the latter are slotted diametrically as shown at 70 and through the slots in the several bars is passed a cross-pin 71 having its ends secured in the shell. It will be ob served that the slots in the respective bars are made of such relative lengths that although the inner members strike the packs first, the outer members can continuetheir downward movement.

The effect of the impact of a bar will be greatest on the top sheet of a pile and will decrease progressively on underlying sheets. When a blow is struck, the metal of the top sheet for an area approximately equal to that of the face of the bar will be stretched; the next sheet will also be stretched but to a less degree than the top sheet and there will be a movement of one sheet relative to the other. sheets around the area effected by the blows, are adhering, the stretching will produce a buckling effect and when the next series of bars strike a sheet, they will also produce a stretching and buckling of sheets, but as the bar at the center remains in contact with the top sheet and is quite heavy, it will prevent If the contacting faces of the the buckling due to the action of the second series of bars, extending inwardly.

While any suitable means may be employed for raising the hammer head, and then permitting it to drop, it is preferred to employ mechanism such as shown herein. A flat member 25 preferably a hardwood plank and having one end secured to the yoke 20 projects upwardly between rollers 26 and 27 having their journals mounted in rotatably mounted blocks 26 and 27 the openings I through said blocks 26 and 27 being. eccentric, to the cylindrical body of the blocks 26 and 27 The blocks 26 carrying the journals of the roller 26 are provided with radial arms 28 which are connected by links 29 to arms 30 on the shaft 31 to which is secured an operating lever 32. The blocks carrying the journals of the roller 27 are provided with radial arms 33 connected by links 34 to arms 35 on the shaft 36 which also is provided with an arm 37 connected to a threaded rod 38 passing through an opening through a rotatable plug 39 and provided with an'operating wheel 40 which contains a nut for the rod 38. By rotating the serted to insure an operative grip on the rollers on the member 25. The blocks 26 are shifted by the lever to cause the roller 26 to grip the member 25 to raise the hammer head or to release said member thereby permitting the hammer head to drop. In order to prevent the head being drawn up too'high in case the operator fails to shift the lever 32, provision is made for shifting the roller 26 out of contact with the member 25 when the hammer head has been raised a predetermined height. As shown in Fig. 4, an arm 41 on the shaft '3lris connected by a link 42 to an arm 43 on a shaft 44 which is provided with an arm 45 projecting into a path of movement of the shell 18 of the F hammer head. When the shell 18 in its upward movement strikes and shifts the arm 45, the shaft 31 will be rotated in a direction to move the. roller 26 away from the element 25. the lifting of the hammer head is controlled by the operator through the lever 32, and that From the foregoing it will be clear that moves downwardly. tion to that end consists of a dog 50 so pivotis extended up between means permitting the upward movement of the element 25 but adapted to grip the element when the latter A suitable construcally mounted that its free end will move up ward with the element 25 but its downward movement is checked by a stop 51, and a roller 52 having eccentric journals 53 arranged on the opposite side of the element 25. On one of the journals of the roller 52 is secured an arm 5a which is connected by a rod 55 to a treadle 56. These parts are so combined that when the treadle is depressedthe roller will be rotated in a direction to release the element 25 carrying the hammer head. In order to compensate for wear of the parts especially the element 25, which as stated, is preferably made of wood, provision is made for adjusting the dog 50 relative to the roller. To this end the pivotal shaft 57 of the dog 50 has its ends arranged in slots, to permit of th dog being shifted longitudinally by a wedge 59 which has its upper end pivotally connected to a lever 60. The free end of the lever is connected to the upper end of the rod 61 having its lower portion threaded to engage the thread provided for its adjustment in the hub of the hand wheel 63.

As will be understood by those skilled in the art, the improvement claimed herein embodies a plurality of hammer bars, means for lifting said bars such as the rollers 26 and 27., and means whereby the bars may be detachably connected to the lifting means, such connecting means being adapted in its upward movement to engage the bars at such points that some of the bars will be raised greater distances than others. 7 V i i I claim herein as my invention:

1. In an apparatus for treating sheets, the combination of a plurality of vertically arranged hammer bars adapted to operate independently one of the other and in such succession as to cause a flow of metal toward the edges of the sheet.

2. In an apparatus for treating sheets the combination of a plurality of hammer bars and means for so operating the hammers in succession that the initial point of impact on the sheet will be distant from the edges thereof and succeeding points of impact more closely adjacent to an edge of the sheet. p j 3. In an apparatus for treating sheets the combination of a plurality of hammer bars,

means for so operating the hammers in succession that the initial point of impact on the sheet will be distant from the edges thereof and succeeding points of impact more closely adjacent to an edge of the sheet and occurring while the priorly operating bars are in contact with the sheet.

4. In an apparatus for treating sheets the combination of a-plurality of vertically arranged hammer bars, vertically movable means adapted to engage the bars during the upwart movement of such means and means for releasing the bars from the vertically movable means.

5. In an apparatus for treating sheets the combination of a plurality of vertically arranged hammer bars and means adapted to raise some of the bars a greater distance than others.

6. In an apparatus for treating sheets the combination of a plurality of vertically movable hammer bars arranged in concentric series and adapted to operate in succession.

7. In an apparatus for treating sheets, the combination of a plurality of gravity hammers and means for lifting said bars, the

be detachably engaged by the lifting means and adapted when moved upwardly to engage the bars at different points from their lower ends.

10. An apparatus fortreating sheets having in combination a shell, a plurality of hammer bars arranged within the shell. the lower ends of the bars extending beyond the shell, means for lifting the shell and means for so connecting the shell to the bars, when the shell is moved upward, that some of the bars will be raised a greater distance than other bars.

In testimony whereof, I have hereunto set my hand.

SAMUEL E. DIESCHER. 

